Automatic train-stop



L. SEESE, DECD. E. M. SEESE, ADMINISTRATRIX. AUTOMATIC TRAIN STOP. APPLICATION FlL ED OCT. I7, 1,918.

1,35 ,833, Patented Oct. 26,1920.

N [NI/INTO}? l y S Elimzzew M Seem/ i 3 is tapped on to the wire 9 between the bat-- control handle 28 connected to the air brake control valve 29. V p

The circuit wire 6 leading from the plate tery and solenoid and similarly the wire? is connected to the wire 10, but by reason of the fact that the ribs 5 to which the wire 7 is contacted are insulated from the plates 3 on which the wires 6 are contacted, no current normally flows through the wires 6 and (,therefore leaving the circuit between the battery and the solenoid closed. 7

Referring now to Fig. 2, a semaphore standard shown at 30 of ordinary construction and carrying .an ordinary semaphore arm 31 is shown. This'semaphore is of the type. commonly used at the entrance of each block on a railway system. An arm 32 ex tends at an angle outwardly from the semaphore arm 31 and upon the outer extremity of the arm 32 is mounted a comb member 33, which comb member carries a plurality 'offlexible contact fingers 34c. The contact fingers'are arranged in such a way that it will be impossible for the comb to pass over one of the series of contact plates carrying the ribs 5, without contacting with two or more of the ribs 4 and 5. It will beseen that should the semaphore arm be lowered to the position shown in full linesFig. 2,

the locomotive in passing the said semaphore arm will bring one of its contact members into alinement with the comb '83 and as it does sothe flexible fingers 34 will wipe over a. pair of ribs 4 and 5' and thus close the circuit through the wires 6 and 7 to the battery 8. As soon asthe battery is short circuited by'the contacting of the flexible fingers '34 withthe contact ribs the currentwill'cease to flow through the wires 9 and 10 to the'solenoid, and the solenoid,

being thus deenergijzedlwill release the core and the spring 20 will be free to exert a pull upon the arms 12,13 and 141. As the arm' 12 moves forwardly the arm 13, pivoted at its lower end will swing downwardly and the arm 14 will be pulled down wardly removing the contact block 15 from the points of the switch, thus breaking the "circuit to the solenoid and at the same time swinging the handle 16 to open the valve 17 and allowing the compressed air to travel upward through the lineg18' and to enter the cylinder 22. It is of course well "known that when alocomotive is in operation the throttle is pulled outwardly and name.

the'piston 23. would occupy a position at the opposite end of the cylinder '22 from that shown in the drawings; When, however, the air enters the cylinder 22 from the air line 18, the piston 23 will be moved backwardly toward the position shown in qliig. 1 and in passing the point of entrance the pipe 26 willallow the compressed air to escape into-the cylinder 27 moving the piston within the said cylinder and rocking.

switch in said circuit, an arm pivoted to the core of said solenoid, a pair of llnks pivotally connected to said arm, the free. ex-

' tremity of one of said links beingpivotally connected to a suitable'stationary portion;

of the device, the free end of the other link being connected to said switch, a fluid line, a valve located in said fluid line, an arm upon said valve pivotally connected to the link to which'the switch is connected, said valve being arranged to remain closed while the solenoid is energiz'ed,"means for automatically moving said links to open said switch and open said valve when the solenoid is deenergized, "cylinders in said'fluid line, a throttle operatively'connectedto one of said cylinders, an air brake lever opera tively connected to the other cylinder a designed to short circuit said first circuit, contact members connected to the terminals of said normally open circuit anda'comb arranged to be engaged by said contact members to close said normally open circuit to d'eenergize' saidsolenoid and cause the Valve to be opened;

Intestimonythat I claim the abovea's administratrix of the estate of LLOYD SEESE,

normally open circuit interposed between said solenoid and the source of power and deceased, I 'have" hereunto subscribed my ELIZABETH Administratriw of Lloyd Seesade'ceased, 

